82% (2006)

83% (1997)

75% (2013)

76% (2004)

82% (2011)

78% (2007)

76% (1978)

58% (1992)

77% (2003)

83% (1982)

71% (2009)

55% (2001)

74% (2005)

55% (1993)

61% (1996)

84% (1990)

0% (2001)

70% (2000)

71% (2009)

77% (1995)